NebulaTor

A CN3D-designed upgrade for the BIQU/BTT Nebula Extruder, developed around improved filament handling, sensing, serviceability, and an integrated cutter system.

Files coming soon: documentation is public now, STL files are planned next, and CAD/STEP files will follow only after final validation.

Public documentation liveBIQU / BTT Nebula ExtruderSTL coming soonCAD after validation

Explore documentation Watch in action

Angled NebulaTor render showing the front window, idler lever, spring preload mechanism, and motor side.

Docs livePublic project reveal and documentation

STL nextPrintable files planned after validation

CAD laterCAD/STEP planned after final validation

KlipperDevelopment firmware logic documented

Before you start

Have you calibrated your printer and filament?

The print settings below assume that your printer is mechanically sound and your filament profile has already been calibrated.

Temperature, Flow, Pressure Advance, Retraction, First Layer and other calibration values can directly affect dimensional accuracy, part fit and print quality.

If you have not calibrated your printer yet, we strongly recommend doing that first.

Review Calibration Continue to Print Settings

Recommended Material

ABS is recommended for the final NebulaTor parts because it is lightweight and resistant to higher temperatures. All development parts were tested in Polymaker PLA, and the final project version was printed in Polymaker ABS.

Recommended Filament

Polymaker ABS / ASA material page. This is an affiliate link for the material family used for the final project version.

Open Polymaker ABS / ASA

Recommended settings

Item	Qty / Value	Notes
Material	ABS	Recommended final material.
Layer height	0.20 mm	Documented recommendation.
Walls	5 recommended	Use at least 4 walls.
Infill	20% Gyroid	Primary recommendation.
Grid infill alternative	30%	Use only if printing with Grid infill.
Top layers	5	Recommended top solid layers.
Bottom layers	5	Recommended bottom solid layers.

Tested Materials

Polymaker PLA

Used for development testing.

Polymaker ABS

Used for the final project version.

Polymaker

Thanks to Polymaker for providing filament used during NebulaTor development and testing.

Support and Affiliates

Affiliate links to project parts and materials will be included where appropriate. Purchasing through those links does not cost extra and helps CN3D develop more open-source upgrades.

Some component links may be affiliate links. Purchasing through them does not cost you extra and helps support future CN3D open-source development.